Undertone – 1. an underlying quality or feeling 2. a subdued or muted sound, colour, flavour or smell

(Pronounced uhn-duh-tohn)

To remember the definition of the word undertone, use the following mnemonic:

It was difficult to understand them as their tone (undertone) of voice was so muted, but my underlying feeling was to get out of there quickly.  

Examples of undertone in a sentence (1. an underlying quality or feeling)

There was an uncomfortable undertone that could be felt in the room.

His words had a sinister undertone.

He managed to bring an awkward undertone to every conversation. 

Examples of undertone in a sentence (2. a subdued or muted sound, colour, flavour or smell)

The wine had a nutty undertone.

They spoke in an undertone to avoid being overheard. 

The label listed undertones of caramel and vanilla in the beer.